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2005 NJIT High School Programming Contest

Friday, March 18, 2005

Attached you may find some sample code that one could use to read simple data (integers) from a disk file and write information into another disk file. The default file name for reading for all these programs is njit and the output file is for some programs njito. Each one of the programs reads an integer n from the input file, and subsequently reads n integers from the input file, adds these n numbers up, and prints their sum into the output file or the standard output.

We tested the C code (njit.c) and C++ code (njitcpp.cpp) under Visual C++ 6.0. All C and C++ code, including njitcc.cc also compiles and executes fine under other compilers (e.g. gcc under Sun/Solaris or PC/Linux). We tested the java code under Sun/Java using command line options.

• C code (reads from njit, prints into standard output) in njitc.c.
• C++ code (reads from njit, prints into standard output) in njitcc.cc.
• C++ code (reads from njit, prints into njito) in njitcpp.cpp.
• Java code (reads from njit, prints into standard output) in njitjva.java.
• Java code (reads from njit, prints into njito) in njitjava.java.
• Sample njit input file.
• C++ code for Problem 4 of the sample problems (reads from problem4, prints into p4team00) in sqroot.cc. Auxiliary file problem4.

Attached you may also find some sample code that one could use to read simple data (pairs of strings) from a disk file and write back the pairs into another disk file. The default file name for reading for all these programs is njit2 and the output file is njito2. Each one of the programs reads an integer n from the input file, and subsequently reads n pairs of strings from the input file, and prints them into the output file. The java program uses Java Strings, the C++ program uses character strings (and assumes that string pairs are at most 10 characters long).

We didn't do much of serious testing, so beware.

• C++ code (reads from njit2, prints into njito2) in njitchar.cpp.
• Java code (reads from njit2, prints into njito2) in njitjhar.java.
• Sample njit2 common input file.